EP0243182A3 - An induction coil - Google Patents

An induction coil Download PDF

Info

Publication number
EP0243182A3
EP0243182A3 EP87303568A EP87303568A EP0243182A3 EP 0243182 A3 EP0243182 A3 EP 0243182A3 EP 87303568 A EP87303568 A EP 87303568A EP 87303568 A EP87303568 A EP 87303568A EP 0243182 A3 EP0243182 A3 EP 0243182A3
Authority
EP
European Patent Office
Prior art keywords
winding
induction coil
output signal
windings
varying
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP87303568A
Other languages
German (de)
French (fr)
Other versions
EP0243182A2 (en
Inventor
John Richard Grainger
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dowty Hydraulic Units Ltd
Original Assignee
Dowty Hydraulic Units Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dowty Hydraulic Units Ltd filed Critical Dowty Hydraulic Units Ltd
Publication of EP0243182A2 publication Critical patent/EP0243182A2/en
Publication of EP0243182A3 publication Critical patent/EP0243182A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D7/00—Control of flow
    • G05D7/06—Control of flow characterised by the use of electric means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/66—Digital/analogue converters
    • H03M1/74—Simultaneous conversion

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • General Induction Heating (AREA)
  • Burglar Alarm Systems (AREA)
  • Servomotors (AREA)
  • Magnetically Actuated Valves (AREA)

Abstract

An induction coil for use with a control device comprises a series of independent windings (12, 13, 14) about a common axis (x - x) having a first winding (12) which produces an output signal and a second winding which produces a second output signal greater in strength than the output signal of the first winding.
The difference in output signal of the windings (12, 14) may be achieved by either varying the number of turns of conductive material on the winding or varying the input signal to the windings. A combination of there alternatives may also be used.
The induction coil may then be used in a control device which in turn may form part of a control system.
EP87303568A 1986-04-25 1987-04-23 An induction coil Withdrawn EP0243182A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB868610205A GB8610205D0 (en) 1986-04-25 1986-04-25 Induction coil
GB8610205 1986-04-25

Publications (2)

Publication Number Publication Date
EP0243182A2 EP0243182A2 (en) 1987-10-28
EP0243182A3 true EP0243182A3 (en) 1989-04-12

Family

ID=10596865

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87303568A Withdrawn EP0243182A3 (en) 1986-04-25 1987-04-23 An induction coil

Country Status (4)

Country Link
EP (1) EP0243182A3 (en)
JP (1) JPS62266205A (en)
GB (1) GB8610205D0 (en)
NO (1) NO871690L (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10310963A1 (en) * 2003-03-13 2004-09-23 Bayerische Motoren Werke Ag Coil construction for electromagnetic actuator for operation of IC engine valve, has measuring coil for measuring flux variations provided by actuator coil

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB865740A (en) * 1958-04-30 1961-04-19 Cannon Electric Co Solenoid
US3389355A (en) * 1964-06-05 1968-06-18 Fred Schroeder Jr. Multiple coil solenoid
FR1543428A (en) * 1967-09-12 1968-10-25 Electro Radio Mesures Soc Further training in electrical transformers and similar devices
DE1589621A1 (en) * 1967-07-06 1970-04-30 Continental Elektro Ind Ag Electric coil with taps
US3556150A (en) * 1969-05-12 1971-01-19 Borg Warner Electro hydraulic servovalve
US3763412A (en) * 1972-07-27 1973-10-02 Thrust Inc Open loop, linear, incremental positioning device
FR2395581A1 (en) * 1977-06-21 1979-01-19 Junca Fernand Coupling transformer variable by discrete steps - has wide selection of step ratios esp. for development work
GB2049228A (en) * 1979-04-21 1980-12-17 Hehl Karl Proportional valve for hydraulic installations
US4295111A (en) * 1979-11-29 1981-10-13 Nasa Low temperature latching solenoid
US4516102A (en) * 1983-11-02 1985-05-07 Rask Mark C Electrically-powered expansion/contraction apparatus
US4560969A (en) * 1983-12-01 1985-12-24 Bardle Servovalve Company Electromagnetic positioner for a servovalve or the like

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB865740A (en) * 1958-04-30 1961-04-19 Cannon Electric Co Solenoid
US3389355A (en) * 1964-06-05 1968-06-18 Fred Schroeder Jr. Multiple coil solenoid
DE1589621A1 (en) * 1967-07-06 1970-04-30 Continental Elektro Ind Ag Electric coil with taps
FR1543428A (en) * 1967-09-12 1968-10-25 Electro Radio Mesures Soc Further training in electrical transformers and similar devices
US3556150A (en) * 1969-05-12 1971-01-19 Borg Warner Electro hydraulic servovalve
US3763412A (en) * 1972-07-27 1973-10-02 Thrust Inc Open loop, linear, incremental positioning device
FR2395581A1 (en) * 1977-06-21 1979-01-19 Junca Fernand Coupling transformer variable by discrete steps - has wide selection of step ratios esp. for development work
GB2049228A (en) * 1979-04-21 1980-12-17 Hehl Karl Proportional valve for hydraulic installations
US4295111A (en) * 1979-11-29 1981-10-13 Nasa Low temperature latching solenoid
US4516102A (en) * 1983-11-02 1985-05-07 Rask Mark C Electrically-powered expansion/contraction apparatus
US4560969A (en) * 1983-12-01 1985-12-24 Bardle Servovalve Company Electromagnetic positioner for a servovalve or the like

Also Published As

Publication number Publication date
EP0243182A2 (en) 1987-10-28
GB8610205D0 (en) 1986-05-29
NO871690D0 (en) 1987-04-23
NO871690L (en) 1987-10-26
JPS62266205A (en) 1987-11-19

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Inventor name: GRAINGER, JOHN RICHARD